1158699011955 has 16 divisors (see below), whose sum is σ = 1854668142240. Its totient is φ = 617722898688.

The previous prime is 1158699011917. The next prime is 1158699011959. The reversal of 1158699011955 is 5591109968511.

It is not a de Polignac number, because 1158699011955 - 2¹⁵ = 1158698979187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1158699011959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15580900 + ... + 15655089.

It is an arithmetic number, because the mean of its divisors is an integer number (115916758890).

Almost surely, 2^{1158699011955} is an apocalyptic number.

1158699011955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1158699011955 is a deficient number, since it is larger than the sum of its proper divisors (695969130285).

1158699011955 is a wasteful number, since it uses less digits than its factorization.

1158699011955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31238470.

The product of its (nonzero) digits is 4374000, while the sum is 60.

The spelling of 1158699011955 in words is "one trillion, one hundred fifty-eight billion, six hundred ninety-nine million, eleven thousand, nine hundred fifty-five".